Glass panel unit
US-2017328124-A1 · Nov 16, 2017 · US
Glass panel unit and inspection method thereof
US10627306B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10627306-B2 |
| Application number | US-201515512819-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 17, 2015 |
| Priority date | Sep 30, 2014 |
| Publication date | Apr 21, 2020 |
| Grant date | Apr 21, 2020 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The glass panel unit includes: a first glass panel; a second glass panel; a seal; an evacuated space; and a gas adsorbent. The seal with a frame shape hermetically bonds the first glass panel and the second glass panel to each other. The gas adsorbent is placed in the evacuated space. The gas adsorbent includes a getter. The gas adsorbent is visible through at least one of the first glass panel and the second glass panel. The gas adsorbent has properties of changing its color when adsorbing gas.
First claim
Opening claim text (preview).
The invention claimed is: 1. An inspection method for a glass panel unit comprising a first glass panel; a second glass panel placed opposite the first glass panel; a seal with a frame shape placed between the first glass panel and the second glass panel to hermetically bond the first glass panel and the second glass panel to each other; an evacuated space enclosed by the first glass panel, the second glass panel, and the seal; and a gas adsorbent placed in the evacuated space and including a getter, the gas adsorbent being visible through at least one of the first glass panel and the second glass panel, and having properties of changing its color when adsorbing gas, the inspection method comprising steps of: observing an original color of the gas adsorbent at a first time when the gas adsorbent is first placed into the evacuated space through at least one of the first and second glass panels; observing a color of the gas adsorbent at a second time through at least one of the first and second glass panels, wherein the second time is after the first time by a predetermined time period; and determining a degree of vacuum of the evacuated space to be low and the gas adsorbent to be inactive when the color of the gas adsorbent at the second time is changed from the original color at the first time. 2. The inspection method of claim 1 , wherein the degree of vacuum of the evacuated space is determined to be lower than 0.1 Pa when the color of the gas adsorbent at the second time is changed from the original color at the first time.
Assignees
Inventors
Classifications
- G01M3/02Primary
by using fluid or vacuum · CPC title
by absorption or adsorption alone · CPC title
for analysing gases · CPC title
Joining glass to glass by processes other than fusing (fusing C03B23/20; units for use as elements for closing wall or like openings and comprising two or more parallel glass panes in spaced relationship, the panes being permanently secured together E06B3/66) · CPC title
Vacuum gauges · CPC title
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- What does patent US10627306B2 cover?
- The glass panel unit includes: a first glass panel; a second glass panel; a seal; an evacuated space; and a gas adsorbent. The seal with a frame shape hermetically bonds the first glass panel and the second glass panel to each other. The gas adsorbent is placed in the evacuated space. The gas adsorbent includes a getter. The gas adsorbent is visible through at least one of the first glass panel…
- Who is the assignee on this patent?
- Panasonic Ip Man Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G01M3/02. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Apr 21 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).